Add configurable concurrent reconciliation to controllers #312
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Description
The controller-runtime defaults MaxConcurrentReconciles to 1, which creates a bottleneck when multiple BMC operations need to be processed simultaneously. This is particularly noticeable during cluster provisioning when many nodes are being set up in parallel.
This change adds a CLI flag (--max-concurrent-reconciles) and corresponding environment variable (RUFIO_MAX_CONCURRENT_RECONCILES) to configure the number of concurrent reconciliations across all controllers.
Why is this needed
Performance testing with 30 nodes showed:
Fixes: #
#311
How Has This Been Tested?
How are existing users impacted? What migration steps/scripts do we need?
Checklist:
I have: